Coffee maker stove



Nov. 2, 1937. F. E. woLcoTT COFFEE MAKER STOVE Filed April 26; 1954 2 Sheets-Sheet l 3\ 4J. Z9: 36 1 vENToR:

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y 37 uw *A i 20 22 ,Z2-MH. W, VIE., L( V qui. 'uli 'll l A A ATTOR EY Nov. 2,; 1937. F. E. woLCoTT Y COFFEE MAKER sTovB Filed April 26, 1934 2 Sheets-Shea? 2 a Sg.. @y/

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INVEBIIT RZ FRA K E o ATTOR EY.

Patented Nov. 2, 193? '2,097,825 COFFEE MAKER STOVE Frank E. Wolcott, West by mesne assignments, to The a corporation of Connecticut FFICE Hartford, Conn., assigner,

Silex Company,

Application April 26, 1934, Serial No. '122,500

22 Claims.

stove and,

ceedingly attractive and Other objects include the heater unit supporting and improved bridging and effective stove, to en- `In these drawings:

Figure 1 is a side elevation of a coffee maker embodying my improvements;

Figure 2 is a plan view of the two unit stove, portions of the same being broken away to facilitate illustration;

Figure 3 is va side elevation of this stove, the right hand heating unit being removed to facilitate illustration;

Figure 4 is a bottom plan view of the stove;

Figure 5 is a section on line 5 5 of Fig. 2;

Figure 6 is a section on line 6 6 of Fig. 1, and

Figure 7 is an enlarged detail sectional view of the joint between the ends of the side strip.

heating units, generally indicated at C, disposed at opposite ends of the upper surface of a casing, generally indicated at D, and mounted thereon and connected thereto in an improved manner, while the casing itself is also of an improved construction and supported in an improved manner as hereinafter described.

Referring more particularly to the heater units C, it Willbe noted that, while'these may be-of different types appears, both are herein of the same of construction, as hereinafter preferably of metal, having lo 4 extending through insulated eyelets 4 in the spider arms below the upper surface of the spider, while the ends of the resistance Wire are connected to usual binding screws vided with 'a plurahty of large apertures 6 and intermediate Vsmall apertures 6 the grid formed will be noted that each bowl I an enlarged top,

to the casing,

on the top of 2 3. Moreover, it is provided with form of an outby the spider herein in the all as hereinafter described. Referring more turn having spaced inturned edge portions I3 passing between strip 8, all in such manner yet very strong j compressed.

tending upward on the unit bow the edges I 0 and the body of the as to provide a simple oint when the parts are suitably y 56 particularly to the top of the be noted that the strip 8 is provided with upstanding out edge portions. ex-

inside the overturned anges l 1s I in such manner as to Supn u:

port the outwardly extending portion of the flange on the upper cut edges of this portion I4. Herein, the strip 8 is also providedwith an upper bridge member I5 having semi-circular cut outs I6 in each side adapted to receive the bowls I when the bridging member I5 is disposed as shown in Figure 2 across the middle of the casing frame formed by the upright member 8. While this bridge member may be connected to the sides of the member 8 in various ways, it herein is provided with a depending ange I1 on each edge suitably attached as by rivets I8 to the top of the strip 8 between the upwardly projecting end portions I4 on the latter' and overlying horizontally disposed flange portions I9 on the top of the strip and between the portion I4 thereon.

As regards the bottom of the casing D, it will be noted that corresponding horizontally disposed iiange portions I9' are provided on the strip 8 beneath a bottom plate 20 conforming to the member 8 and received in the bottom thereof, these members I9 being suitably connected to the member 23 as by screws 2|. Here, also it will be noted that depending portions 22, corresponding to the upstanding top portions I4 previously described, are provided on the bottom of the strip 8. These portions 22 are disposed herein in corresponding grooves 23 or cut back portions in forming shoulders on the upper outer edges of semi-circular foot members 24, herein in the form of plates of suitable insulating composition or wood, herein wood, in such manner as to overlie the latter members while forming a smooth or flush exterior joint. As shown vthe members 22 'are also suitably attached to the bottom member 20 by counter sunk screws 25, in such manner as to'raise the portions the bottom member 20 above the oor level While supporting the entire casing securely upon the two members 24 andeectually insulating the casing.

As regards connecting the units C in position in the casing thus provided, it will also be noted that improved clamping means are provided between the units and the bottom 2li. Herein, each unit includes, in addition to the spider 3, a clamping member 26 therefor overlying the axis of the spider and having depending portions 21 passing down between arms of the spider and through a disc or washer 28 underlying the spider and also through the bottom of the bowl I and, if desired, a like outer disc member 29 similar to the member 28. As shown, eachof these depending members 21 is also threaded at its lower end as at 30 and has a nut 3| substantially longer than the protruding threaded end of the member 21 and threaded on the threaded extremity thereof. Further, it will be noted that screws 32 are extended through a pair of adjacent apertures 33 in the bottom 20 and have their heads engaging the bottom and their upper ends threaded into the lower ends of these elongated nuts 3I, while free access to the slotted ends of the vscrews is provided by suitably cutting away the adjacent portion of the foot member 24 as at 34.

Referring more particularly to the electrical connections for the units C, it will be noted that the binding screws 5 for-these units are disposed on the adjacent sides of the units. Further, these screws 5 are connected to conductors leading to a switch 35 of any suitable type carried inside the front wall of the casingmember 8 and to a line connection 36 carried inside the rear wall of that member. Although other types of switch may be used if desired, herein, the switch is of a type having a plurality of swinging levers 31, one for each unit and carried on a single base, while the two levers 31 are disposed side by side in the center of the front of the casing, and the line connection 36 is located centrally at the back of the casing. Thus, the connections being close together, only short conductors are required, while the switches permit the units to be used singly when desired, with the switch nearest to the unit controlling the latter.

As regards quick cooling, it will be noted that, in addition to the apertures E, 6 in the bottom of the bowls I, these bowls are relatively shallow and spaced from the rounded end walls of the casing member 8 by an air space 38, while being supported by the upstanding edge portions the latter member within the heat radiating rims 1, and having only the lower edges of the latter engaging the bridging member I5. Moreover, it will be noted that a plurality of large apertures 39 is provided, preferably as shown, in the bottom 20 in such manner as to permit a free ow of air in between the feet 24 and under the bottom 20 and up through the latter and through and around bowls I and the heating units therein, all in such manner as to produce a construction which cooperates with the quick cooling-structure and the lower bowls, which cannot seal oi the units at the top, to provide very effective quick cooling, eliminating any necessity for the removal of the coffee makers from the stoves in order to eiect the return of the brewed coffee from the upper bowl to the lower bowl upon the completion of a normal infusion period following cutting oi the current. Attention is also directed to the fact that the air circulation and insulation is such as, despite the use of heating units of high heat capacity, to make it possible to avoid overheating, or discoloration of the stove casing.

Among other results of my improved construction, it will be observed that it is made possible to obtain the advantages in a plural unit coffee maker of the single strip of metal used to form the sides of the whole stove, while also eliminating the expense incident to the use of corners on the stove, previously considered necessary in plural unit stoves. It will further be evident that through the elimination of these corners, a more compact stove structure is provided and one in attractive in effect. Further, as a improved construction, including the single side strip and the bridging strips, it is possible to minimize the waste oi' sheet metal in forming the stoves, the side strips being formed from sheet metal with little or no Waste and the bridging strips making it possible to utilize small pieces, while the whole metal casing is very readily and cheaply assembled. By reason of the provision of the corresponding top and bottom portions I4 and 22, it is also made possible to assemble the bridge l5 between either the projections I4 or the projections 22 while the bowls I and foot members 24 may also be assembled on either the projections I4 or 22, depending upon where the bridge is assembled. As a result of the use of my improved foot members, it will also be observed that a very stable stove is provided having not only an attractive appearance but the desired support of the casing in such manner as Ito insulate the same effectually from the table or the like, while permitting the desired air ilow to thefunits. The

readily accessible from thebottom, the bowls then cluding a. band having curved ends conforming being, f COUISe, readily raised to disconnect the to and supportingV the remote sides of said bowls, 5

i conductors. and a bridge member cooperating in supporting carrying said means in spaced relation and hav- While I have herein shown both units as of the the adjacent sides of the latter and supported on quick cooling type, it will, of course, be undersaid band. stood that, if desired, one of these may beof the 7. In a stove, a plurality of electric heating non-quick cooling or so-ca1led warmer type, units including unit housing bowls having anges 10 quick cooling unit which is used in the coil'ee ating in supporting said flanges. 15 making operation Further, it will be evident In a. stove, a plurality of electric heating that other forms of quick cooling units than the units including uniL housing bowls, a. casing carspider type illustrated may be used 1f desired rying said bowls in spaced relation including a only two units, three or more may be embodied ing, and cooperating bridge means supported on 2n mediate circular bowl apertures therein. These upwardly into said lianges. and other advantages of my improved construc- 9. In a stove, a plurality of electric heating tion will, however, be clearly apparent to those units including unit housing bowls having flanges skilled in the art. thereon,' a casing carrying said bowls in spaced While I have in this appueation specifically derelation and having curved ends having portions scribed one embodiment which my invention ma disposed Within Said flanges, a. bottom member the scope of the'appended claims. l0. In a coiee maker stove, bowl supporting 35 What I claim as new and desire to secure by means, va casing s pporting said means and hav- Letters Patent is: ing curved sides extending around the latter, and

1 In a coffee maker stove, a plurality of means spaced foot forming members disposed beneath non-adjacent curved sides, and a casing carrying stantialiy conforming to said curved sides. 40

2. In acoiee maker stove, a plurality of means `for lsupporting bowls during heating, and a casing housing bowls, a casing member supporting said 5o said supporting means.

3. In a stove, a plurality of electric heating units including unit housing bowls having curved sides and outwardly flanged tops, and a casing i enclosing the bottoms of said bowls carrying said many confomung to said curved ends b5 4 In a stove a plumllty l coffee maker bowl tially lconformingto said curved ends, said foot supporting means having curved side portions, a members compnsmg plates underlying the bot' casing carrying said means in laterally spaced toms of the ends of said casing and spaced apart relation and having curved portions conforming at their inner ends to and supporting-the non-adjacent curved sides 1 of said portions, and means on the top of said housing bowls, a Casing member supporting said casing cooperating to support said means.

also supporting the disposed beneath the bowls and bridge means latter, and foot members opposite curvedends of said casing and substantially conforming to said curved ends, said casing having upwardly and downwardly projecting portions on its curved ends respectively supporting said foot members.

of laterally,

said bowls and supported on 16. In a coiee maker, a plurality spaced bowl supporting means, a casing supporting the same and having curved ends supporting and extending around laterally spaced supporting means and substantially conforming to the remote sides thereof, and spaced foot forming members disposed beneath and supporting the opposite curved ends of said casing and substantially conforming to said curved ends.

1'7. In a coffee maker stove, a bowl, a. support for said bowl, a resistance carrying spider in said bowl, and means bridging the axis of said spider and axially connected to said support positioning said spider and bowl lon said support.

18. In a coffee maker stove, a bowl, a support for said bowl, a spider in said bowl and having radially disposed resistance carrying arms, means bridging the axis of said spider and axially connecting the latter to said bowl, and means connected to said connecting means for connecting said bowl to said support.

19. In a coiee maker stove, an apertured casing having a bottom, a bowl seated inthe aperture therein above said bottom, a resistance carrying spider seated in said bowl, and means bridging the axis of said spider and axially connected to said bottom and positioning said spider and bowl in said casing.

20. In' a coiee maker stove, an apertured casing having a bottom, a bowl seated in the aperture therein above said bottom, a resistance carrying spider seated in said bowl, and means bridging the axis of said spider and axially connected to said bottom and positioning said spider and bowl in said casing comprising a bridging member bridging said spider, nuts threaded on the lower ends of said member, and connecting members seatedin said bottom and threaded into said nuts.

21. In a coiee maker stove, aplurality of laterally spaced bowl supporting means, a casing supporting the same and having curved ends supporting and extending around said means and substantially conforming to the remote sides of said means and bridging means also supporting said supporting means and extending between the latter, foot members disposed beneath the opposite ends of said casing and substantially conforming to said ends, and heating means beneath one or more of said supporting means and `having communicating air passage means leading from between said foot members through said casing and supporting means.

22. A stove casing for coffee maker stoves comprlsing a band having curved ends and like up- Y ward and downward projections on said ends and corresponding bridge receiving portions between said projections, a bridge member carried on one of said portions, bowl Supporting means carried on one of said sets of projections and conforming substantially to said curved ends and disposed at opposite ends of said bridge member, and foot members carried on the other of said sets of projections and disposed on the set of projections on the opposite side of said band from said bridging member and supporting means,

GERTIFICATE oF CORRECTION.

patent N0.- 2,097,825-

It is hereby of the above numberedpatent requiring column,

the record-of the case in (Seal) FRANK E, wotcorr. certified'that error appearsin. the printed correct-.iones follows:

line 21, claim 21, str iire'oui: uney words November 2 1957*.

specification Page 1.1., second "beneath one or more ofv 'and that the said 'Lettersraeent the same may conform to A. n. e.

:Henry Van Arsdale, y

Acting Commissioner of Patents.

FRANK E. WoLooT'I. l 4o 

